For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningRemoval Procedure
Warning: Refer to Approved Equipment for Collision Repair Warning in the
Preface section.
Warning: Refer to Collision Sectioning Warning in the Preface section.
Warning: Refer to Glass and Sheet Metal Handling Warning in the Preface section.
Disable the SIR System. Refer to SIR Disabling ...
Air Conditioning Compressor Replacement (1.6L LXT)
Preliminary Procedures
Recover the refrigerant. Refer to Refrigerant Rec overy and
Recharging.
Remove drive belt. Refer to Generator and Air Conditioning Compressor
and Power Steering Pump Belt Replacement.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehic ...
Interior Lamps Dimming
This group includes lamps which may dim. This group may use a combination of
vacuum fluorescent illumination, LEDs and incandescent
lamps
HVAC control module, head assembly
Rear HVAC control module, head assembly
Radio
Rear seat audio
The instrument panel cluster
The PRNDL lamp, wit ...